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Assessment of groundwater vulnerability based on a modified DRASTIC model, GIS and an analytic hierarchy process (AHP) method: the case of Egirdir Lake basin (Isparta, Turkey)

Sener, Erhan ; Davraz, Aysen Sener, Erhan (correspondence author)

Hydrogeology Journal, May 2013, Vol.21(3), pp.701-714 [Peer Reviewed Journal]

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  • Title:
    Assessment of groundwater vulnerability based on a modified DRASTIC model, GIS and an analytic hierarchy process (AHP) method: the case of Egirdir Lake basin (Isparta, Turkey)
  • Author: Sener, Erhan ; Davraz, Aysen
  • Sener, Erhan (correspondence author)
  • Subjects: Freshwater ; Satellite Navigation Systems ; Lakes ; Mathematical Models ; Turkey ; Geographic Information Systems ; Groundwater ; Analytic Hierarchy Process ; Land Use ; Surface and Groundwater Hydrology (CE)
  • Is Part Of: Hydrogeology Journal, May 2013, Vol.21(3), pp.701-714
  • Description: A DRASTIC-model method based on a geographic information system (GIS) was used to study groundwater vulnerability in Egirdir Lake basin (Isparta, Turkey), an alluvial area that has suffered agricultural pollution. 'Lineament' and 'land use' were added to the DRASTIC parameters, and an analytic hierarchy process (AHP) method determined the rating coefficients of each parameter. The effect of lineament and land-use parameters on the resulting vulnerability maps was determined with a single-parameter sensitivity analysis. Of the DRASTIC parameters, land use affects the aquifer vulnerability map most and lineament affects it least, after topography. A simple linear regression analysis assessed the statistical relation between groundwater nitrate concentration and the aquifer vulnerability areas; the highest R super(2) value was obtained with the modified-DRASTIC-AHP method. The DRASTIC vulnerability map shows that only the shoreline of Egirdir Lake...
  • Language: English
  • Identifier: ISSN: 1431-2174 ; E-ISSN: 1435-0157 ; DOI: 10.1007/s10040-012-0947-y

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